Patents Assigned to Shields Rubber Corporation
  • Mine vehicle trolley pole
    Patent number: 4116312
    Abstract: It is common practice to provide electrically propelled mine vehicles, such as locomotives, people carriers and shuttle-cars, with solid wooden trolley poles. The lower end of such a pole is mounted on the vehicle and the upper end carries a trolley shoe that slides along an electric power line or trolley wire suspended from the ceiling of the mine. An electric cable connects the shoe with the vehicle propulsion motor. The cable extends down the outside of the trolley pole, to which it is attached by tape or the like, as is also a fuse case.
    Type: Grant
    Filed: September 28, 1977
    Date of Patent: September 26, 1978
    Assignees: Permali, Incorporated, Shields Rubber Corporation
    Inventors: Stuart L. Adler, William O'Neil Hunt